Exoplanet
XO-4 b
889.28 light-years
- Discovery
- Transit · 2010
- Radius
- 14.0113 (+0.8967 / −0.8967) Earth radii
- Mass
- 451.3186 (+60.3877 / −60.3877) Earth masses
- Orbital period
- 4.1251 (+4 × 10⁻⁶ / −4 × 10⁻⁶) days
- Semi-major axis
- 0.0552 (+2.7 × 10⁻⁴ / −2.8 × 10⁻⁴) AU
- Equilibrium temperature
- 1,630 (+169 / −36) K
- Mass provenance
- Mass
Measurements may come from different studies and need not form one self-consistent model. “Msini” is a minimum mass; a mass inferred from radius is an estimate. Equilibrium temperature is a model estimate, not a measured surface temperature or evidence of habitability.
NASA archive record and references ↗
Snapshot retrieved: 2026-10-11T04:15:07.688253+00:00